1111992129 has 12 divisors (see below), whose sum is σ = 1640386176. Its totient is φ = 725554872.

The previous prime is 1111992127. The next prime is 1111992163. The reversal of 1111992129 is 9212991111.

It is not a de Polignac number, because 1111992129 - 2¹ = 1111992127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111992093 and 1111992102.

It is not an unprimeable number, because it can be changed into a prime (1111992127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1313989 + ... + 1314834.

It is an arithmetic number, because the mean of its divisors is an integer number (136698848).

Almost surely, 2^1111992129 is an apocalyptic number.

It is an amenable number.

1111992129 is a deficient number, since it is larger than the sum of its proper divisors (528394047).

1111992129 is a wasteful number, since it uses less digits than its factorization.

1111992129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628876 (or 2628873 counting only the distinct ones).

The product of its digits is 2916, while the sum is 36.

The square root of 1111992129 is about 33346.5459830550. The cubic root of 1111992129 is about 1036.0178490711.

The spelling of 1111992129 in words is "one billion, one hundred eleven million, nine hundred ninety-two thousand, one hundred twenty-nine".